Palliative gastrectomy plus chemotherapy versus chemotherapy alone for incurable advanced gastric cancer: a meta-analysis
Received 7 July 2018
Accepted for publication 14 August 2018
Published 26 October 2018 Volume 2018:10 Pages 4759—4771
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 3
Editor who approved publication: Dr Beicheng Sun
Pei Wu,1 Pengliang Wang,1 Bin Ma,2 Songcheng Yin,1 Yuen Tan,1 Wenbin Hou,1 Zhenning Wang,1 Huimian Xu,1 Zhi Zhu1
1Department of Surgical Oncology, First Affiliated Hospital of China Medical University, Shenyang 110001, China; 2Department of Colorectal Surgery, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Dadong District, Shenyang 110042, Liaoning Province, China
Background: Whether palliative gastrectomy combined with chemotherapy can improve the survival of patients with advanced gastric cancer remains controversial. We performed a meta-analysis to clarify whether palliative gastrectomy plus chemotherapy can benefit patients with incurable advanced gastric cancer and to explore the best candidates in this patient population.
Methods: We searched the literature systematically using electronic databases including PubMed, EMBASE, and the Cochrane Library. And HRs and their 95% CIs were used to express the results for overall survival (OS) and progression-free survival (PFS).
Results: One randomized controlled trial with 175 patients and 12 cohort studies with 2,193 patients were analyzed. The pooled HR for OS (HR=0.43, 95% CI=0.29–0.65, P<0.001), subgroup analysis of stage M1 (HR=0.53, 95% CI=0.40–0.72, P<0.001), peritoneal dissemination (HR=0.46, 95% CI=0.28–0.73, P=0.001), and liver metastasis (HR=0.46, 95% CI=0.33–0.65, P<0.001) all indicated the superiority of palliative gastrectomy plus chemotherapy. However, the pooled HR for PFS (HR=0.61, 95% CI=0.33–1.13, P=0.110) got separate outcome.
Conclusion: The results of this meta-analysis indicated that palliative gastrectomy plus chemotherapy can improve OS for incurable advanced gastric cancer. In addition, analyses based on liver metastasis and peritoneal dissemination demonstrated the advantages of palliative gastrectomy plus chemotherapy. However, the PFS of incurable advanced gastric cancer with palliative gastrectomy plus chemotherapy was no better than that under chemotherapy alone.
Keywords: advanced gastric cancer, palliative gastrectomy, chemotherapy, survival
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